?提环

... lifting capacity 提升能力；扬程；提升岩屑的能力 lifting dog 提环 lifting efficiency 提升效率 ...

[机]?抓钩

... 抓夫 press gang 抓钩 grapple; grappler; bunter dog; bunter; clip-hook; lifting dog; dog iron; grab ... 抓放爱 catch and release ...